Home appliance having movable door handle

• US 9,138,056 B2
• Filed: 02/21/2013
• Issued: 09/22/2015
• Est. Priority Date: 08/02/2012
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kwon, Hongsik, Kim, Youngwoo, Yu, Seonil
• Primary Examiner(s): Troy, Daniel J
• Assistant Examiner(s): Gallego, Andres F
• Application Number:
  US13/773,160
• Publication Number:
  US 20140035453A1
• Time in Patent Office: 943 Days
• Field of Search: 312/409, 312/326, 312/328, 164/36, 164/38, 126/192, 126/197, 126/190, 126/273.R, 126/37.R, 126/39.B, 493/94
• US Class Current: 1/1
• CPC Class Codes: A47B 2095/022 Pivotable handles with two sockets
• CPC Class Codes: A47B 95/02 Handles similar handles for doors in general E05B1/0015
• CPC Class Codes: E05F 1/00 Closers or openers for wings, not otherwise provided for in this subclass
• CPC Class Codes: E05F 1/1246 with a coil spring perpendicular to the pivot axis
• CPC Class Codes: E05F 11/54 for doors
• CPC Class Codes: E05F 5/00 Braking devices, e.g. checks; Stops; Buffers construction of pneumatic or liquid braking devices E05F3/00; braking devices, buffers or end stops on drawers for tables, cabinets or like furniture A47B88/473; combined with devices for holding wings open E05C17/00; devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing E05C17/04
• CPC Class Codes: E05Y 2201/68 Handles, cranks
• CPC Class Codes: E05Y 2900/308 for ovens
• CPC Class Codes: F24C 15/02 Doors specially adapted for stoves or ranges
• CPC Class Codes: F24C 15/024 Handles

Abstract

A home appliance having a door which may be opened and closed, and more particularly, a home appliance to assist a user in easily opening or closing a door is disclosed. The home appliance includes a cabinet having a chamber in which an object is received or retrieved, a door to open or close the chamber, and a handle assembly to be rotated relative to the door during opening or closing of the door, wherein rotation of the handle assembly causes the door to be rotated about a door rotating axis.

Claims

1. A home appliance comprising:

a cabinet having a chamber in which an object is received or retrieved;

a door to open or close the chamber, the door having a communication aperture;

a handle rotated relative to the door during opening or closing of the door, wherein rotation of the handle causes the door to rotate about a door rotating axis; and

a link unit connected to the handle, the link unit transmitting a rotation angle or rotation force of the door to the handle in accordance with rotation of the door,

wherein the link unit comprises;

a handle link to rotate along with the handle; and

a link unit rotating axis defining a rotation center about which the handle link is rotated, and

wherein a length of the handle link outwardly exposed from a front surface of the door through the communication aperture increases as an opening angle of the door increases.

2. The home appliance of claim 1, wherein the link unit further comprises a link connector to convert rotation of the door into rotation of the handle link, or to convert rotation of the handle link into rotation of the door.

3. The home appliance of claim 2, wherein the link connector includes one end connected to a link node of the handle link and another end to rotate about a link connector rotating axis, whereby the link connector is rotated about the link connector rotating axis as the door is rotated.

4. The home appliance of claim 3, wherein the one end of the link connector is rotatably connected to the link node of the handle link.

5. The home appliance of claim 3, wherein the door rotating axis is spaced apart from the link connector rotating axis, and the handle link is rotated to compensate for a difference between a rotation radius of the link node with respect to the door rotating axis and a rotation radius of the link node with respect to the link connector rotating axis.

6. The home appliance of claim 2, further comprising a damper to alleviate shock caused during opening or closing of the door and to rotate about a damper rotating axis as the door rotates, the damper rotating axis spaced apart from the door rotating axis.

7. The home appliance of claim 6, wherein the link connector has a first end connected to the handle link and a second end connected to the damper, wherein the link connector is rotated about the damper rotating axis as the door is rotated.

8. The home appliance of claim 2, further comprising a first bracket provided to the cabinet to form the door rotating axis and a second bracket provided to the cabinet to form the link connector rotating axis, the door rotating axis and the link connector rotating axis spaced apart from each other.

9. The home appliance of claim 1, wherein the handle is rotatably connected to the door to assist a user in opening or closing the door such that a position of the handle relative to the door is variably linked with rotation of the door.

10. The home appliance of claim 1, wherein the handle is rotatably connected to the door to assist a user in opening or closing the door such that a rotation angle of the door is changed as an angle of the handle relative to the door is changed.

11. The home appliance of claim 1, wherein the door is a pull-down type door downwardly rotating and opening the door.

12. The home appliance of claim 1, wherein the rotation angle of the handle increases as the opening angle of the door increases.

13. The home appliance of claim 1, wherein the handle is outside of the front surface of the door, and the link unit rotating axis is inside of the door.

14. The home appliance of claim 1, further comprising a link cover to cover the handle link.

15. The home appliance of claim 1, wherein the handle link comprises:

a first connector extending from the link unit rotating axis rearward of the door;

a second connector extending forward of the door and connected to the handle; and

a third connector located between the first connector and the second connector.

16. A home appliance comprising;

a door rotatable about a door rotating axis;

a handle rotatably provided in front of the door to assist a user in opening or closing the door;

a link unit connected to the handle and rotatable about a link connector rotating axis to transmit a rotation angle of the door to a rotation angle of the handle, the link connector rotating axis being spaced apart from the door rotating axis,

wherein the link unit includes;

a handle link to rotate about a link rotating axis inside the door as the door is rotated, the handle link serving to rotate the handle about the link rotating axis, and

a link connector having a first end to be rotated about the link connector rotating axis and a second end to rotate the handle link as the door is rotated;

wherein a length of the handle link outwardly exposed from a front panel of the door increases as an opening angle of the door increases.

17. The home appliance of claim 16, wherein the door includes the front panel, a side panel, and a rear panel, and a horizontal distance and a vertical distance of the handle with respect to the front panel are variable as the handle is rotated.

18. The home appliance of claim 17, wherein the front panel has a communication aperture for entrance or exit of the handle link.

19. The home appliance of claim 16, wherein the link connector includes a connection loop to prevent interference during rotation of the handle link.

20. The home appliance of claim 16, wherein an attitude of the handle with respect to a base of the home appliance is fixed as the handle is rotated about the link rotating axis.

21. A home appliance comprising:

a cabinet having a chamber in which an object is received or retrieved;

a door to open or close the chamber while being rotated about a door rotating axis;

a handle at one side of the door;

a handle link connected to the handle and having a link rotating axis inside of the door so as to rotate the handle about the link rotating axis;

a link connector connected to a link node of the handle link to rotate the handle link as the link connector is rotated about a link connector rotating axis;

a first bracket on the cabinet to form the door rotating axis; and

a second bracket on the cabinet to form the link connector rotating axis, the link connector rotating axis spaced apart from the door rotating axis,

wherein the handle link is rotated by a difference between a rotation radius of the link node with respect to the door rotating axis and a rotation radius of the link node with respect to the link connector rotating axis as the door is rotated.

22. The home appliance of claim 21, wherein the handle link includes:

an upper horizontal portion extending from the link rotating axis rearward of the door;

a vertical portion extending downward from the upper horizontal portion; and

a lower horizontal portion extending forward from the vertical portion and connected to the handle.

23. The home appliance of claim 22, wherein the link node is at a middle portion of the upper horizontal portion and performs translational movement and trajectory movement inside the door as the door is rotated.

24. The home appliance of claim 21, wherein the second bracket is separate from the first bracket.

25. The home appliance of claim 21, wherein the first bracket and the second bracket are formed as a single bracket to form both the door rotating axis and the link connector rotating axis.